Marantz 7702 MK2

gatestick

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Oct 22, 2020
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48
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Mead, NE
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Preamp, Processor or Receiver
Marantz 7702 mk2
Main Amp
Monolith 7x200
Additional Amp
Yamaha RX-Z9
Other Amp
Crown XLI 3500
Universal / Blu-ray / CD Player
lg
Front Speakers
klipsch rf7 version 3
Center Channel Speaker
klipsch rc7
Surround Speakers
klipsch rf5
Surround Back Speakers
klipsch rs7
Front Height Speakers
Monolith Alpha 8
Rear Height Speakers
Monolith Alpha 8
Subwoofers
DIY Ultimax 15 X 2. Crown amp powered.
Other Speakers or Equipment
xbox 1s, ps4, Roku ultra,
Video Display Device
epson 5040
Screen
visual apex 100
Remote Control
logitech
Streaming Equipment
Roku HD
Streaming Subscriptions
Disney + Amazon prime
Other Equipment
Tivo OTA.
I just got my Monolith 7X200 amp last weekend. All I can say is WOW. In the process of changing it out I accidently found out that the RCA outs are still active when the XLR is selected in the menu. I wanted to do a measurement using RCA vs XLR. The measurements look nearly identical just 6 or 7 DB louder using XLR. I only changed out the 1 cable for testing purposes in an attempt to save time. Having both outs on the Marantz active at the same time allowed me to run 2 sets of front speakers using equipment I have on hand. I have 2 questions now and many more to come I am sure. (1) Is there a chance of doing damage to the Marantz 7702MK2 using both RCA and XLR simultaneously? This also allows me to possibly bi-amplify the front 3 channels. Specifically the center channel Klipsch RC7 is rated at 125 watts RMS. (2) Is it a bad idea to bi-amp this using the Monolith for the low side (200 watts) and the Yamaha Z9 (140 watts) for the high side. Another question just popped into my head. Is there any benefit to doing this, or is there something I could be doing better?
 

Wayne A. Pflughaupt

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May 21, 2017
Messages
540
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Corpus Christi, TX
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Preamp, Processor or Receiver
Yamaha CX-A5000 A/V Preamp / Processor
Main Amp
Yamaha RX-Z9 AV Receiver (as multichannel amp)
Universal / Blu-ray / CD Player
Denon DCT-3313 UDCI Universal Disc Player
Front Speakers
Canton Karat 920
Center Channel Speaker
Canton Karat 920
Front Wide Speakers
Realistic Minimus 7 (front EFX speakers)
Surround Speakers
Canton Plus D
Surround Back Speakers
Yamaha YDP2006 Digital Parametric EQ (front mains)
Front Height Speakers
Yamaha YDP2006 Digital Parametric EQ (surrounds)
Rear Height Speakers
Yamaha YDP2006 Digital Parametric EQ (sub)
Subwoofers
Hsu ULS-15 MKII
Other Speakers or Equipment
Adcom ACE-515 (for power management)
Video Display Device
Yamaha DT-2 (digital clock display)
Screen
Pioneer PDP-6010FD 60" Plasma TV
Remote Control
Stock Yamaha Remote
Streaming Equipment
Roku Express
Other Equipment
Audio Control R130 Real Time Analyzer
I would be good to see a wiring diagram to see of the XLR and RCA outputs are buffered. Not sure if that’s the right term, but basically they should not be “seeing” each other, as would be the case if they were paralleled.

That said, either way using both will not cause any harm, any more so that using basic splitters.

As far as biamping, give it a try, but many feel it’s a useless gimmick, as everything goes through the speaker’s passive crossover.

Regards,
Wayne
 

ddude003

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Aug 13, 2017
Messages
990
Location
Somewhere Northeast of Kansas City Missouri
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PrimaLuna Dialogue Premium TubePre (2 channel+sub)
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McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Computer Audio
MacBook Pro, Custom i7 7700k De-lid 2xAsus1080ti GFX build, Audirvana+, LiquidSonics, SoX
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Chord Electronics Ltd. Qutest
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Sony UBP-X700 /M Ultra HD 4K HDR
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Samsung The Premiere LSP7T UST Laser Projector
Screen
Elite Screens Aeon CLR3 0.8 Gain 103-inch
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Netgear Nighthawk S8000 Streaming SwitchLumin U1 Mini Streamer/Transport
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QoBuz Studio Premier, Roon, Amazon Prime & Netflix
Other Equipment
ThrowRug, SaddleBlankets, WideBand & BaseTraps...
(1) Is there a chance of doing damage to the Marantz 7702MK2 using both RCA and XLR simultaneously?
Some amps this can cause issues/distortion/harm... Best to ask the manufacturer... The Unbalanced RCA pre-output is 1.2 V while the Balanced XLR pre-output: 2.4 V per specs in the manual... So there may be some level matching issues to think about also...

Usually the benefit of bi-amping is by driving the high frequency drivers, in your case the horn, with an amp that excels in high to mid frequencies while driving the low frequencies drivers with an amp that excels in mid to low frequencies... For example a tube amp for the horn and an SS amp for the rest... You would most likely need mod your speakers crossovers or yank them out completely then managing them with DSP or other external methods...
 
Last edited:

gatestick

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Supporter
Thread Starter
Joined
Oct 22, 2020
Messages
48
Location
Mead, NE
More  
Preamp, Processor or Receiver
Marantz 7702 mk2
Main Amp
Monolith 7x200
Additional Amp
Yamaha RX-Z9
Other Amp
Crown XLI 3500
Universal / Blu-ray / CD Player
lg
Front Speakers
klipsch rf7 version 3
Center Channel Speaker
klipsch rc7
Surround Speakers
klipsch rf5
Surround Back Speakers
klipsch rs7
Front Height Speakers
Monolith Alpha 8
Rear Height Speakers
Monolith Alpha 8
Subwoofers
DIY Ultimax 15 X 2. Crown amp powered.
Other Speakers or Equipment
xbox 1s, ps4, Roku ultra,
Video Display Device
epson 5040
Screen
visual apex 100
Remote Control
logitech
Streaming Equipment
Roku HD
Streaming Subscriptions
Disney + Amazon prime
Other Equipment
Tivo OTA.
Level matching is an issue. Most trims are near the -12db max with the Yamaha boosted a little. This is mostly an experiment, and an excuse to use nearly all of the equipment I have. I find this kind of thing fun, even though I find more questions than answers. I doubt that Marantz will answer me but I will try. Thanks everyone for the input.
 

gatestick

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Thread Starter
Joined
Oct 22, 2020
Messages
48
Location
Mead, NE
More  
Preamp, Processor or Receiver
Marantz 7702 mk2
Main Amp
Monolith 7x200
Additional Amp
Yamaha RX-Z9
Other Amp
Crown XLI 3500
Universal / Blu-ray / CD Player
lg
Front Speakers
klipsch rf7 version 3
Center Channel Speaker
klipsch rc7
Surround Speakers
klipsch rf5
Surround Back Speakers
klipsch rs7
Front Height Speakers
Monolith Alpha 8
Rear Height Speakers
Monolith Alpha 8
Subwoofers
DIY Ultimax 15 X 2. Crown amp powered.
Other Speakers or Equipment
xbox 1s, ps4, Roku ultra,
Video Display Device
epson 5040
Screen
visual apex 100
Remote Control
logitech
Streaming Equipment
Roku HD
Streaming Subscriptions
Disney + Amazon prime
Other Equipment
Tivo OTA.
This is what Marantz had to say.
 

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ddude003

Senior Member
Joined
Aug 13, 2017
Messages
990
Location
Somewhere Northeast of Kansas City Missouri
More  
Preamp, Processor or Receiver
PrimaLuna Dialogue Premium TubePre (2 channel+sub)
Main Amp
McIntosh MC152 SS Amp (2 channel)
Additional Amp
Yamaha RX-A850 Pro (the other 5 channels lol)
Computer Audio
MacBook Pro, Custom i7 7700k De-lid 2xAsus1080ti GFX build, Audirvana+, LiquidSonics, SoX
DAC
Chord Electronics Ltd. Qutest
Universal / Blu-ray / CD Player
Sony UBP-X700 /M Ultra HD 4K HDR
Front Speakers
Martin Logan ElectroMotion ESL
Center Channel Speaker
Martin Logan Motion C2
Surround Speakers
Martin Logan Motion 4
Surround Back Speakers
Martin Logan Motion 4 (yes, another set of these)
Subwoofers
Martin Logan Dynamo 700
Other Speakers or Equipment
Cifte 12AU7 NOS & Genalex Gold Lion Tubes in Pre
Video Display Device
Samsung The Premiere LSP7T UST Laser Projector
Screen
Elite Screens Aeon CLR3 0.8 Gain 103-inch
Remote Control
PrimaLuna & Lumin iApp
Streaming Equipment
Netgear Nighthawk S8000 Streaming SwitchLumin U1 Mini Streamer/Transport
Streaming Subscriptions
QoBuz Studio Premier, Roon, Amazon Prime & Netflix
Other Equipment
ThrowRug, SaddleBlankets, WideBand & BaseTraps...
Well there you go... And kudos to Wayne... It will be interesting to hear back from you of your experience with this experiment... Have fun!!!
 

gatestick

Member
Supporter
Thread Starter
Joined
Oct 22, 2020
Messages
48
Location
Mead, NE
More  
Preamp, Processor or Receiver
Marantz 7702 mk2
Main Amp
Monolith 7x200
Additional Amp
Yamaha RX-Z9
Other Amp
Crown XLI 3500
Universal / Blu-ray / CD Player
lg
Front Speakers
klipsch rf7 version 3
Center Channel Speaker
klipsch rc7
Surround Speakers
klipsch rf5
Surround Back Speakers
klipsch rs7
Front Height Speakers
Monolith Alpha 8
Rear Height Speakers
Monolith Alpha 8
Subwoofers
DIY Ultimax 15 X 2. Crown amp powered.
Other Speakers or Equipment
xbox 1s, ps4, Roku ultra,
Video Display Device
epson 5040
Screen
visual apex 100
Remote Control
logitech
Streaming Equipment
Roku HD
Streaming Subscriptions
Disney + Amazon prime
Other Equipment
Tivo OTA.
This has worked out for me for more than a year. I don't like that I need to have positive trims for the Yamaha channels, but it is only driving Atmos speakers. I had my Infinity speakers up front for a while. I didn't like the sound with 2 pairs of front speakers for left and right channels.
 
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